JPS6291759A - Defrostation system of refrigeration cycle for heat pump - Google Patents
Defrostation system of refrigeration cycle for heat pumpInfo
- Publication number
- JPS6291759A JPS6291759A JP60229074A JP22907485A JPS6291759A JP S6291759 A JPS6291759 A JP S6291759A JP 60229074 A JP60229074 A JP 60229074A JP 22907485 A JP22907485 A JP 22907485A JP S6291759 A JPS6291759 A JP S6291759A
- Authority
- JP
- Japan
- Prior art keywords
- bypass path
- compressor
- valve
- heat exchanger
- way valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Defrosting Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は空気熱源ヒートポンプの冷凍サイクルに関し
、特にそのデフロスト回路の構成と制御に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refrigeration cycle for an air source heat pump, and particularly to the configuration and control of its defrost circuit.
第6図、第1図はたとえば、実開昭51−490393
号公報の従来f+1として示された従来のヒートポンプ
式空気調和機の冷媒回路図と、除霜時の電気制御回路図
である。Figures 6 and 1 are for example Utility Model Application No. 51-490393
They are a refrigerant circuit diagram of a conventional heat pump type air conditioner shown as conventional f+1 in the publication, and an electric control circuit diagram during defrosting.
この両図のうち、−1ず、第6図において、(1)は圧
縮機、(2)は四方弁、(3)は室内側熱交換器、(4
)は減圧装置、(5)は室内側熱交換器である。これら
の圧縮機0)、四方弁(2)、室内側熱交換器(3)、
減圧装置(4)、室外側熱交換器(5)を冷媒配管(6
1により環状に連結して、冷媒を通し、て冷媒回路(7
)を構成している。Of these two figures, in Figure 6, (1) is the compressor, (2) is the four-way valve, (3) is the indoor heat exchanger, and (4) is the compressor.
) is a pressure reducing device, and (5) is an indoor heat exchanger. These compressor 0), four-way valve (2), indoor heat exchanger (3),
The pressure reducing device (4) and the outdoor heat exchanger (5) are connected to the refrigerant piping (6).
The refrigerant circuit (7
).
また、室内側熱交換器(3)に対向して、室内ファン(
8)が配設されており、室外側熱交換器(5)にも案外
ファン(9)が配設されている。In addition, an indoor fan (
8) is provided, and surprisingly, a fan (9) is also provided in the outdoor heat exchanger (5).
室外仰1熱交換器(5)の入口配管に感温部が接触して
いる除霜条件検出器a1が配設されている。除霜条件検
出器α1が検出信号を出力すると、第7図に示す切換開
閉接点αBの接点(11a)、(11b)が切り換えら
れるようになってbる。A defrosting condition detector a1 whose temperature sensing part is in contact with the inlet pipe of the outdoor vertical heat exchanger (5) is disposed. When the defrosting condition detector α1 outputs a detection signal, the contacts (11a) and (11b) of the switching contact αB shown in FIG. 7 are switched.
この切換開閉接点αBの接点(11a)は常時は閉成さ
れ、除霜条件検出器α〔が検出信号を出力すると。The contact (11a) of this switching contact αB is normally closed, and when the defrosting condition detector α outputs a detection signal.
接点(11t))を閉じるようになっている。The contact point (11t)) is closed.
接点(11a’lは四方弁(2)の駆動コイル(2a)
と暖房スイッチαJの一方の接点を介して制御電源端子
αSの一方に接続されている。Contact (11a'l is the drive coil (2a) of the four-way valve (2)
and one of the control power terminals αS via one contact of the heating switch αJ.
同様にして、接点(11b)は、リレーa2およびスイ
ッチαJの他方の接点を介して制御電源端子α9の一方
に接続されている。切換開閉接点allの可動接点は制
御電源端子αりの他方に接続されている。Similarly, the contact (11b) is connected to one of the control power terminals α9 via the relay a2 and the other contact of the switch αJ. The movable contact of the switching contact all is connected to the other control power terminal α.
制御電源端子α9には、リレーα2の常閉接点(12a
)、 室内ファン(8)、送風速度スイッチ0着の直
列回路が接続されてbる。The control power terminal α9 has a normally closed contact (12a) of the relay α2.
), indoor fan (8), and air speed switch 0 are connected in series.
次に動作について説明する。暖房時には、暖房スイッチ
αJを閉成し、四方弁の駆動コイル(2a)を励磁して
、四方弁(2)を暖房サイクル運転する。これにより圧
縮機filから吐出された高温高圧ガスは矢印のように
、四方弁(2)を通り、室内側熱交換器(3)で室内フ
ァン(8)の強制通風によって冷却され。Next, the operation will be explained. During heating, the heating switch αJ is closed, the drive coil (2a) of the four-way valve is energized, and the four-way valve (2) is operated in a heating cycle. As a result, the high-temperature, high-pressure gas discharged from the compressor fil passes through the four-way valve (2) as shown by the arrow, and is cooled in the indoor heat exchanger (3) by forced ventilation from the indoor fan (8).
凝縮液となって減圧装置(4)で断熱膨張して、低圧冷
媒となり、室外側熱交換器(5)で室外ファン(9)の
強制通風により8口熱されて蒸発し、低圧ガスとなって
四方弁(2)を通り、圧縮機(りに吸入される。It becomes a condensate, expands adiabatically in the pressure reducing device (4), becomes a low-pressure refrigerant, and is heated in the outdoor heat exchanger (5) by the forced ventilation of the outdoor fan (9) and evaporates, becoming a low-pressure gas. The air then passes through the four-way valve (2) and is sucked into the compressor.
外気温が下がるにしたがす、室外側熱交換器(5)から
冷媒回路(7)内への吸い上げ熱量が減少し、蒸発温度
が下がってきて、零点温度以下になるさ。As the outside temperature decreases, the amount of heat absorbed from the outdoor heat exchanger (5) into the refrigerant circuit (7) decreases, and the evaporation temperature decreases to below the zero point temperature.
室外側熱交換器(5)に着霜が始まるが、これにより熱
を吸い上げる能力が減少し、室外側熱交換器(5)の入
力配管温度はさらに低下し、設定温度以下となる。Frost begins to form on the outdoor heat exchanger (5), which reduces its ability to absorb heat, and the input pipe temperature of the outdoor heat exchanger (5) further decreases to below the set temperature.
この温度を除霜条件検出器帥が検出して、切換開閉接点
α1)の接点(11a)の開放により、四方弁の駆動コ
イル(2a)の励磁が解け、四方弁(2)は切り換わり
、冷媒回路+71は冷房運転となる。This temperature is detected by the defrosting condition detector, and by opening the contact (11a) of the switching contact α1), the excitation of the drive coil (2a) of the four-way valve is released, and the four-way valve (2) is switched. Refrigerant circuit +71 is in cooling operation.
また、同時に、接点(11b)の開成により、リレーa
Zが励磁ばれ、その常閉接点(12a)が開放されて、
室内ファン(8)の送風が停止し、居住者へのコールド
ドラフトが防止される。このとき、送風速度スイッチへ
6はいずれかが入って因る。At the same time, by opening the contact (11b), relay a
Z is energized and its normally closed contact (12a) is opened,
The indoor fan (8) stops blowing air, and cold drafts to the occupants are prevented. At this time, one of the air blowing speed switches 6 is turned on.
このように、四方弁(2)が切り換わり、冷房運転にな
ることにより、圧縮機fi+から吐出した高温高圧冷媒
ガスは、切り換わった四方弁(2)を通過した後、室外
側熱交換器(5)に入り、冷媒の有する熱でそれに付着
した1Nを解かす。In this way, by switching the four-way valve (2) and entering cooling operation, the high-temperature, high-pressure refrigerant gas discharged from the compressor fi+ passes through the switched four-way valve (2) and then passes through the outdoor heat exchanger. (5), and the heat of the refrigerant dissolves the 1N attached to it.
除絹終了にともなめ、除霜条件検出器QGの感温部の温
度が上昇すると、切換開閉接点+Illの接点(11a
)が閉じ、接点(11b)が開き、四方弁(2)のコイ
ル(2a)は再び励磁され、四方弁(2)が切り換わり
。When the temperature of the temperature sensing part of the defrosting condition detector QG rises with the completion of silk removal, the switching opening/closing contact + Ill contact (11a
) is closed, the contact (11b) is opened, the coil (2a) of the four-way valve (2) is energized again, and the four-way valve (2) is switched.
暖房運転に戻るようになる。It will return to heating operation.
〔発明が解決りようとする問題点〕
上記のように構成されたヒートポンプ甲冷凍サイクルの
デフロスサイクルでは■暖房サイクル。[Problems to be solved by the invention] In the defrost cycle of the heat pump A refrigeration cycle configured as described above, ■Heating cycle.
デフロストサイクルの切り換え毎に、四方弁を切り換え
る必要があり、それに伴う騒音が問題となる。■デフロ
ストサイクル中室内熱交換器は蒸発器として作mlてb
るため、デフロスト運転中及び暖房運転復帰後しばらく
の間は暖房が行なわれず、室内温度が低下し、居住者に
対して快適性が損われる。■室外熱交換器と室内熱交換
の冷媒を暖房サイクル、デフロストサイクル毎に入れ換
えが行なわれ、それだけにデフロストに安する時間が長
くかめ・す、暖房連転時間が減り快適性が損なわれるな
どの問題点があった。It is necessary to switch the four-way valve every time the defrost cycle is switched, and the accompanying noise becomes a problem. ■The indoor heat exchanger during the defrost cycle is made as an evaporator.
Therefore, heating is not performed during the defrost operation and for a while after the heating operation is resumed, and the indoor temperature decreases, impairing the comfort of the occupants. ■The refrigerant in the outdoor heat exchanger and indoor heat exchanger is replaced every heating cycle and defrost cycle, which leads to problems such as longer defrost times, decreased continuous heating time, and reduced comfort. There was a point.
この発明は、上記のような問題点を解決するためになさ
れたもので、四方弁の切り換えをなくシ。This invention was made to solve the above problems, and eliminates the need for switching four-way valves.
暖房サイクルからデフロストサイクルに切シ換る際の急
激な圧力変化に伴う騒音、撮動を緩和し。Reduces noise and camera noise caused by sudden pressure changes when switching from heating cycle to defrost cycle.
短時間で除霜を行い、しかも室内熱交換器には冷たい冷
媒を送らないように構成したものである。It defrosts in a short time and is configured so that cold refrigerant is not sent to the indoor heat exchanger.
本発明に係るヒートポンプ用冷凍サイクルの除霜方式は
、圧縮機、四方弁、室内熱交換器、膨張弁及び室外熱交
換器から成るヒートポンプ用冷凍サイクルにおいて、圧
縮機の吐出口と四方弁との間に逆止弁を設け、圧縮機の
吐出口と逆止弁との間から第1のバイパス路を設け、こ
の第1のバイパス路の途中に電磁弁を介して、第2のバ
イパス路と第3のバイパス路に分流させ、第2のバイパ
ス路は逆止弁を介して膨張弁と室外熱交換器の間に開口
せしめ、第3のバイパス路は毛細管を介して四方弁と圧
縮機の吸入口との間に開せしめる構成したものである。The defrosting method for a heat pump refrigeration cycle according to the present invention is a heat pump refrigeration cycle consisting of a compressor, a four-way valve, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger. A check valve is provided in between, a first bypass path is provided between the discharge port of the compressor and the check valve, and a second bypass path is connected to the first bypass path via a solenoid valve. The flow is divided into a third bypass path, the second bypass path is opened between the expansion valve and the outdoor heat exchanger through a check valve, and the third bypass path is opened between the four-way valve and the compressor through a capillary tube. It is configured to open between the intake port and the intake port.
この発明におけるヒートポンプ用冷凍サイクルの除霜方
式は、デフロストサイクルに入ると、上記圧縮機は連続
運転のままc四方弁全開り換えずに、)上記電磁弁をあ
る一定の時間、ある一定の周期で開閉を繰り返しながら
開口し、上記圧縮機からのホットガスを上記第1のバイ
パス路、第2のバイパス路を経由して直接上記室外熱交
換器に送り除霜を行う。The defrosting method of the refrigeration cycle for a heat pump in this invention is such that when the defrost cycle is entered, the compressor remains in continuous operation and the four-way valve is not fully opened. The compressor is opened while repeating opening and closing, and the hot gas from the compressor is sent directly to the outdoor heat exchanger via the first bypass path and the second bypass path to perform defrosting.
以下、この発明の一実施例を第1図と第2図に基づき説
明する。第1図は本発明を適用したヒートポンプ用冷凍
サイクルの暖房運転サイクルを示し、第2図はデフロス
トサイクルを示している。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 shows a heating operation cycle of a refrigeration cycle for a heat pump to which the present invention is applied, and FIG. 2 shows a defrost cycle.
illは圧縮機、(2)は四方弁、(31は室内熱交換
器、(5)は室外熱交換器、(6)は冷媒配管、(8)
は室内ファン。ill is a compressor, (2) is a four-way valve, (31 is an indoor heat exchanger, (5) is an outdoor heat exchanger, (6) is a refrigerant pipe, (8)
is an indoor fan.
(9)け室外ファン、αeは除霜条件検出器で1以上は
従来例で示した冷媒回路と同一の構成になっている。α
0は室内熱交換器(3)と室外熱交換器(5)とのI’
=1に設けた機械式膨張弁で、αηは圧縮機(11の吐
出口と四方弁(2)の間に設けた逆止弁1で、錦は′t
ILm弁で、 (IIは逆止弁2で、■は毛細管である
。C2))は圧縮機(1)の吐出口と逆止弁1aηとの
間から設けた第1のバイパス路で、@け電磁弁αgと機
械式張弁翰と室内熱交換器(5)との間を逆止弁2(1
1を介して結ぶ第2のバイパス路で、@は電磁弁錦と四
方弁(2)と圧縮機(1)の吸入口との中間地点を毛細
1g翰を介して結ぶ第3のバイパス路である。(9) In the outdoor fan, αe is a defrosting condition detector, and at least one of them has the same configuration as the refrigerant circuit shown in the conventional example. α
0 is I' between the indoor heat exchanger (3) and the outdoor heat exchanger (5)
=1 is the mechanical expansion valve installed, αη is the check valve 1 installed between the discharge port of the compressor (11) and the four-way valve (2), and Nishiki is 't
In the ILm valve, (II is the check valve 2, ■ is the capillary tube. C2)) is the first bypass path provided between the discharge port of the compressor (1) and the check valve 1aη, @ A check valve 2 (1
1 is the second bypass path that connects through 1, and @ is the third bypass path that connects the intermediate point between the solenoid valve brocade, the four-way valve (2), and the suction port of the compressor (1) through a capillary 1g wire. be.
次に動作につbて第1図、第2図及び第4図に従って説
明する。まず第1図に示す暖房サイクル時において圧縮
機(1)で圧縮された高温高圧のガス冷媒は、逆止弁1
allを通って四方弁(2)で切り換えられて、室内
熱交換器(3)に送られ凝縮し、室内を暖房し2機械式
膨張弁鰻(以下膨張弁α9と略す)に至る。膨張弁αG
で減圧された冷媒は室外熱交換器(5)で蒸発し、四方
弁(2)で切換えられて再び圧縮機(11に戻るサイク
ルを構成している。また第2のバイパス路のには逆止弁
2(11が設けられているため、第2のバイパス路@及
び第3のバイパス路(至)を経由して、圧縮機+11に
冷媒が流れこむことはない。そして外気温が下がるに従
い、室外熱交換器(5)での蒸発温度が下がって露点温
度以下になると室外熱交換器(5)に着霜が始まる。こ
れにより、室外熱交換器(5)の温度が低下し、ある設
定温度以下になると、除霜条件検出α0が着霜を検出し
、除霜運転に入る。即ち、暖房サイクルからデフロスト
サイクルに第4図のタイムチャートに示す動作によって
切り侠わる。次に第2図のデフロストサイクルでは、圧
縮機(1)は連続運転のまま、室外ファン(9)を停止
させ、室内ファン(8)の回転数を下げ。Next, the operation will be explained with reference to FIGS. 1, 2, and 4. First, during the heating cycle shown in Fig. 1, the high temperature and high pressure gas refrigerant compressed by the compressor (1) is
The air is switched by a four-way valve (2) through the four-way valve (2), sent to an indoor heat exchanger (3), where it condenses, heats the room, and reaches two mechanical expansion valves (hereinafter abbreviated as expansion valves α9). Expansion valve αG
The refrigerant, whose pressure is reduced in Since the stop valve 2 (11) is provided, refrigerant will not flow into the compressor +11 via the second bypass path and the third bypass path. When the evaporation temperature in the outdoor heat exchanger (5) decreases to below the dew point temperature, frost begins to form on the outdoor heat exchanger (5).As a result, the temperature of the outdoor heat exchanger (5) decreases, and When the temperature falls below the set temperature, the defrosting condition detection α0 detects frost formation and the defrosting operation begins.In other words, the heating cycle switches to the defrosting cycle by the operation shown in the time chart of Fig. 4.Next, the second In the defrost cycle shown in the figure, the compressor (1) remains in continuous operation, the outdoor fan (9) is stopped, and the rotation speed of the indoor fan (8) is lowered.
電磁弁口S全ある一定の時間、ある一定の周期で開閉を
繰り返し、その後開口する。この動作によって暖房サイ
クルからデフロストサイクルに切り換る際の急激な圧力
変化を緩和しながら圧縮機(1)で圧縮された高温高圧
のガス冷媒を第1のバイパス路QBを経由して、第2の
バイパス路のと第3のバイパス路に送り出す。第2のバ
イパス路のに入った冷媒ガスは、逆止弁(1’lを介し
て直接室外熱交換器(5)に至り、J’4f溶かし、冷
媒自身Fi凝縮して四方弁(2)を経由したのち1毛細
管■を介して第3のバイパス路@を経由してきた高温高
圧のガス冷媒と混合して飽和ガスになったのち再び圧縮
機(1)に吸入される。この時膨張弁α9は閉じてし甘
うため。The solenoid valve port S repeats opening and closing at a certain period for a certain period of time, and then opens. Through this operation, the high-temperature, high-pressure gas refrigerant compressed by the compressor (1) is transferred to the second bypass passage QB while alleviating the sudden pressure change when switching from the heating cycle to the defrost cycle. of the bypass path and the third bypass path. The refrigerant gas that has entered the second bypass path directly reaches the outdoor heat exchanger (5) via the check valve (1'l), melts J'4f, condenses the refrigerant itself, and returns to the four-way valve (2). After passing through the first capillary ■ and the third bypass passage @, it mixes with the high-temperature, high-pressure gas refrigerant to become a saturated gas, which is sucked into the compressor (1) again.At this time, the expansion valve α9 is closed and it's easy.
逆止弁αηから室内熱交換器(3)を経由して、膨張弁
(Iυに至るまでの冷媒回路上では、暖房サイクル時の
高圧が維持されるため、室内熱交換器(3)に蓄積され
、室内ファン(8)によって微j虱を送ることによリゾ
フロストサイクル巾におりでもm)虱を室内に送ること
が出来る。The high pressure during the heating cycle is maintained on the refrigerant circuit from the check valve αη to the expansion valve (Iυ) via the indoor heat exchanger (3), so that it accumulates in the indoor heat exchanger (3). By sending fine lice through the indoor fan (8), the lice can be sent indoors even if they are within the width of the Rhizophrost cycle.
なお、上記実施例では、第1のバイパス路Qυと第2,
3のバイパス路@、@とを’am弁αgを介して結んだ
が、第3図に示すように第1のバイパス路Qυと第2,
3のバイパス路とを流量制御弁−を介して結んだ構成に
おいて、第5図のタイムチャートの示すように暖房サイ
クルからデフロストサイクルに切り換える際、流量制御
弁G41の弁開度を徐々に上げながら、圧縮機(1)で
圧縮された高温高圧のガス冷媒を第1のバイパス路Ql
lを経由して。In addition, in the above embodiment, the first bypass path Qυ and the second bypass path Qυ
3 bypass passages @, @ are connected via 'am valve αg, but as shown in Fig. 3, the first bypass passage Qυ and the second,
In the configuration in which the bypass passage No. 3 is connected via the flow control valve -, when switching from the heating cycle to the defrost cycle as shown in the time chart of Fig. 5, the opening degree of the flow control valve G41 is gradually increased. , the high temperature and high pressure gas refrigerant compressed by the compressor (1) is passed through the first bypass path Ql.
via l.
第2のバイパス路■と第3のバイパス路に送り出すよう
にしても、上記実施例と同様の効果を奏する。Even if it is sent to the second bypass path (2) and the third bypass path, the same effects as in the above embodiment can be obtained.
以上のように、この発明によれば、圧縮機の吐出口と四
方弁との間に逆止弁を設け、圧縮機の吐出口と逆止弁と
の間から第1のバイパス路を設け。As described above, according to the present invention, a check valve is provided between the discharge port of the compressor and the four-way valve, and a first bypass path is provided between the discharge port of the compressor and the check valve.
この第1のバイパス路の途中に電磁弁を介して。via a solenoid valve in the middle of this first bypass path.
第2のバイパス路と第3のバイパス路に分流させ。The flow is divided into a second bypass path and a third bypass path.
第2のバイパス路は逆止弁を介して膨張弁と室外熱交換
器の間に開口せしめ、第3のバイパス路は毛細管を介し
て四方弁と圧縮機の吸入口との間に開口せしめる構成に
した冷媒回路で、圧縮機を連続運転で、四方弁を切り換
えずに、電磁弁をある一定の時間、ある一定の周期で開
閉を繰り返しながら開口し、暖房サイクルからデフロス
トサイクルに切り換え、圧縮機からのホットガスを第1
のバイパス路、第2のバイパス路を経由して直接上記室
外熱交罠器に送り除霜を行うので、暖房サイクルからデ
フロストサイクルに切り換る際の急激な圧力変化も緩和
されそれに共なう騒音、振動も軽減され、短時間で除霜
が行え、しかも室内熱交換器に冷たい冷媒を送り込まな
いため、室内への負荷となることもなく、除霜運転終了
後の暖房運転の復帰が速く、室内の快適性を損うことな
く除霜運転が実行できるとbう効果がある。The second bypass passage is opened between the expansion valve and the outdoor heat exchanger via a check valve, and the third bypass passage is opened between the four-way valve and the compressor suction port via a capillary tube. With the refrigerant circuit set to The hot gas from
Since the air is sent directly to the outdoor heat exchange trap via the second bypass path and the second bypass path to perform defrosting, the sudden pressure change when switching from the heating cycle to the defrost cycle is also alleviated. Noise and vibration are also reduced, defrosting can be performed in a short time, and since cold refrigerant is not sent to the indoor heat exchanger, there is no load on the room, and heating operation returns quickly after defrosting operation is completed. This has the advantage that defrosting operation can be performed without impairing indoor comfort.
例によるデフロストサイクル時の動作を示すタイムチャ
ート図、第5図は他の実施例によるデフロストサイクル
時の動作を示すタイムチャート図。FIG. 5 is a time chart showing operations during a defrost cycle according to an example; FIG. 5 is a time chart showing operations during a defrost cycle according to another embodiment;
第6図は従来のヒートポンプ式空気調和機の冷媒回路図
、第1図はそれの電気回路図である。FIG. 6 is a refrigerant circuit diagram of a conventional heat pump air conditioner, and FIG. 1 is its electrical circuit diagram.
図において(ljは圧縮機、(2)は西方弁、(3)は
室外熱交換器、(4)は減圧装置、(5)は室外熱交換
器、(6)は冷媒配管、(8)は室内ファン、(9)は
室外ファン。In the figure (lj is the compressor, (2) is the west valve, (3) is the outdoor heat exchanger, (4) is the pressure reduction device, (5) is the outdoor heat exchanger, (6) is the refrigerant pipe, (8) is an indoor fan, and (9) is an outdoor fan.
01は除霜条件検出器、αυは切換え開閉接点、 (1
1a)は接点、 (llb)は接点、azはりL/
+、 (12a’)は常閉接点、αりVi暖房ヌイツ
チ、αをは送風速度スイッチ。01 is a defrosting condition detector, αυ is a switching contact, (1
1a) is a contact, (llb) is a contact, az beam L/
+, (12a') is a normally closed contact, α is a heating switch, and α is a blower speed switch.
αりは制御電源端子、α0は機械式膨張弁、αηは逆止
弁1.fileは’am弁、 alは逆止弁、■は毛細
管、 C2)1は第1のバイパス路、@は第2のバイパ
ス路、(ハ)は第3のバイパス路、 124)け流量制
御弁である。α is the control power supply terminal, α0 is the mechanical expansion valve, and αη is the check valve 1. file is the 'am valve, al is the check valve, ■ is the capillary tube, C2) 1 is the first bypass path, @ is the second bypass path, (c) is the third bypass path, 124) Inlet flow rate control valve It is.
なお1図中同一符号は同−又は相当部分を示す。Note that the same reference numerals in each figure indicate the same or equivalent parts.
Claims (2)
交換器とから構成されるヒートポンプ用冷凍サイクルに
おいて、上記圧縮機の吐出口と四方弁との間に逆止弁を
設け、さらに、上記圧縮機の吐出口と上記逆止弁の中間
から第1のバイパス路を設け、上記第1のバイパス路に
電磁弁を介して、第2のバイパス路と第3のバイパス路
に分流させ、第2のバイパス路は逆止弁を介して、上記
膨張弁と上記室外熱交換器との間に開口せしめ、第3の
バイパス路は毛細管を介して上記四方弁と上記圧縮機の
吸入口との間に開口せしめる構成とした冷媒回路で、上
記圧縮機を連続運転で上記四方弁を切り換えずに上記電
磁弁をある一定の時間、ある一定の周期で開閉を繰り返
しながら開口し、暖房サイクルからデフロストサイクル
に切り換え、上記圧縮機からのホットガスを上記第1の
バイパス路、第2のバイパス路を経由して直接上記室外
熱交換器に送り除霜を行うことを特徴とするヒートポン
プ用冷凍サイクルの除霜方式。(1) In a heat pump refrigeration cycle consisting of a compressor, a four-way valve, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger, a check valve is provided between the discharge port of the compressor and the four-way valve. Further, a first bypass path is provided between the discharge port of the compressor and the check valve, and the second bypass path and the third bypass path are connected to the first bypass path via a solenoid valve. A second bypass path is opened between the expansion valve and the outdoor heat exchanger through a check valve, and a third bypass path is opened between the four-way valve and the compressor through a capillary tube. In a refrigerant circuit configured to be opened between the compressor and the suction port, the compressor is operated continuously and the solenoid valve is opened and closed repeatedly at a certain period for a certain period of time without switching the four-way valve, A heat pump characterized in that the heating cycle is switched to the defrost cycle, and the hot gas from the compressor is sent directly to the outdoor heat exchanger via the first bypass path and the second bypass path to perform defrosting. Defrosting method for refrigeration cycle.
記第2のバイパス路と第3のバイパス路に分流させる構
成した冷媒回路で、圧縮機を連続運転で、四方弁を切り
換えずに、上記流量制御弁(の開度)を徐々に上げ、暖
房サイクルからデフロストサイクルに切り換えることを
特徴とする特許請求の範囲第1項記載のヒートポンプ 用冷凍サイクルの除霜方式。(2) A refrigerant circuit in which the first bypass path is divided into the second bypass path and the third bypass path via a flow control valve, and the compressor is operated continuously without switching the four-way valve. The defrosting method for a refrigeration cycle for a heat pump according to claim 1, wherein (the opening degree of the flow rate control valve) is gradually increased to switch from a heating cycle to a defrost cycle.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60229074A JPS6291759A (en) | 1985-10-15 | 1985-10-15 | Defrostation system of refrigeration cycle for heat pump |
KR1019860006265A KR900005979B1 (en) | 1985-08-22 | 1986-07-30 | Air conditioning apparatus |
DE8686111450T DE3685862T2 (en) | 1985-08-22 | 1986-08-19 | AIR CONDITIONER. |
EP86111450A EP0213540B1 (en) | 1985-08-22 | 1986-08-19 | Air conditioning apparatus |
US06/898,492 US4709554A (en) | 1985-08-22 | 1986-08-21 | Air conditioning apparatus |
CN86105455.5A CN1005210B (en) | 1985-08-22 | 1986-08-22 | Air conditioning equipment |
AU61785/86A AU580509B2 (en) | 1985-08-22 | 1986-08-22 | Air conditioning apparatus |
CN88106586A CN1008131B (en) | 1985-08-22 | 1988-09-07 | Air conditioning apparatus |
HK150/93A HK15093A (en) | 1985-08-22 | 1993-02-25 | Air conditioning apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60229074A JPS6291759A (en) | 1985-10-15 | 1985-10-15 | Defrostation system of refrigeration cycle for heat pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6291759A true JPS6291759A (en) | 1987-04-27 |
JPH0527018B2 JPH0527018B2 (en) | 1993-04-19 |
Family
ID=16886329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60229074A Granted JPS6291759A (en) | 1985-08-22 | 1985-10-15 | Defrostation system of refrigeration cycle for heat pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6291759A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62266365A (en) * | 1986-05-13 | 1987-11-19 | 松下精工株式会社 | Air conditioner |
JPS6422970U (en) * | 1987-07-31 | 1989-02-07 | ||
JPH01175276U (en) * | 1988-05-30 | 1989-12-13 | ||
JPH02161269A (en) * | 1988-12-13 | 1990-06-21 | Yanmar Diesel Engine Co Ltd | Defrosting device |
JP2009019779A (en) * | 2007-07-10 | 2009-01-29 | Panasonic Corp | Refrigerating cycle device |
JP2009036503A (en) * | 2007-07-09 | 2009-02-19 | Panasonic Corp | Refrigerating cycle device and air conditioner having this refrigerating cycle device |
JP2009036502A (en) * | 2007-07-10 | 2009-02-19 | Panasonic Corp | Air conditioner |
JP2009047385A (en) * | 2007-08-22 | 2009-03-05 | Hitachi Appliances Inc | Equipment using refrigerating cycle, and air conditioner |
JP2009145032A (en) * | 2007-11-21 | 2009-07-02 | Panasonic Corp | Refrigeration cycle apparatus and air conditioner equipped with the same |
JP2011202812A (en) * | 2010-03-24 | 2011-10-13 | Toshiba Carrier Corp | Air conditioner |
EP1983277A3 (en) * | 2007-04-19 | 2014-11-19 | Panasonic Corporation | Refrigeration cycle apparatus |
WO2017195296A1 (en) * | 2016-05-11 | 2017-11-16 | 三菱電機株式会社 | Air conditioning apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5459648A (en) * | 1977-10-21 | 1979-05-14 | Hitachi Ltd | Air conditioner |
JPS58102067A (en) * | 1981-12-14 | 1983-06-17 | 三菱電機株式会社 | Air conditioner |
JPS5921467U (en) * | 1982-07-28 | 1984-02-09 | シャープ株式会社 | Heat pump refrigeration cycle |
JPS5997462A (en) * | 1982-11-27 | 1984-06-05 | 松下電器産業株式会社 | Defrosting circuit for heat pump |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5921467B2 (en) * | 1977-01-13 | 1984-05-19 | 松下電器産業株式会社 | Water leak detection device for hot water circulation circuit |
-
1985
- 1985-10-15 JP JP60229074A patent/JPS6291759A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5459648A (en) * | 1977-10-21 | 1979-05-14 | Hitachi Ltd | Air conditioner |
JPS58102067A (en) * | 1981-12-14 | 1983-06-17 | 三菱電機株式会社 | Air conditioner |
JPS5921467U (en) * | 1982-07-28 | 1984-02-09 | シャープ株式会社 | Heat pump refrigeration cycle |
JPS5997462A (en) * | 1982-11-27 | 1984-06-05 | 松下電器産業株式会社 | Defrosting circuit for heat pump |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62266365A (en) * | 1986-05-13 | 1987-11-19 | 松下精工株式会社 | Air conditioner |
JPS6422970U (en) * | 1987-07-31 | 1989-02-07 | ||
JPH01175276U (en) * | 1988-05-30 | 1989-12-13 | ||
JPH02161269A (en) * | 1988-12-13 | 1990-06-21 | Yanmar Diesel Engine Co Ltd | Defrosting device |
EP1983277A3 (en) * | 2007-04-19 | 2014-11-19 | Panasonic Corporation | Refrigeration cycle apparatus |
JP2009036503A (en) * | 2007-07-09 | 2009-02-19 | Panasonic Corp | Refrigerating cycle device and air conditioner having this refrigerating cycle device |
JP2009036502A (en) * | 2007-07-10 | 2009-02-19 | Panasonic Corp | Air conditioner |
JP2009019779A (en) * | 2007-07-10 | 2009-01-29 | Panasonic Corp | Refrigerating cycle device |
JP2009047385A (en) * | 2007-08-22 | 2009-03-05 | Hitachi Appliances Inc | Equipment using refrigerating cycle, and air conditioner |
JP2009145032A (en) * | 2007-11-21 | 2009-07-02 | Panasonic Corp | Refrigeration cycle apparatus and air conditioner equipped with the same |
JP2011202812A (en) * | 2010-03-24 | 2011-10-13 | Toshiba Carrier Corp | Air conditioner |
WO2017195296A1 (en) * | 2016-05-11 | 2017-11-16 | 三菱電機株式会社 | Air conditioning apparatus |
JPWO2017195296A1 (en) * | 2016-05-11 | 2018-11-29 | 三菱電機株式会社 | Air conditioner |
GB2563536A (en) * | 2016-05-11 | 2018-12-19 | Mitsubishi Electric Corp | Air conditioning apparatus |
GB2563536B (en) * | 2016-05-11 | 2021-06-09 | Mitsubishi Electric Corp | Air conditioning apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0527018B2 (en) | 1993-04-19 |
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